.mask {
  width: 100%;
  height: 100%;
  position: absolute;
  left: 0;
  top: 0;
  z-index: 10;
  background-image: linear-gradient(
    270deg,
    hsl(0deg 0% 100%) 0,
    hsl(0deg 0% 100%) 5%,
    rgb(17 23 41 / 0%) 49.8%,
    hsl(0deg 0% 100%) 95%,
    hsl(0deg 0% 100%) 100%
  );
}
